/Engine/Plugins/Experimental/Mutable/Source/CustomizableObjectEditor/Classes/MuCOE/Nodes/CustomizableObjectNodeExtendMaterial.h
Save the parent node reference.
virtual void SetParentNode ( [UCustomizableObject](API\Plugins\CustomizableObject\MuCO\UCustomizableObject) * Object, [FGuid](API\Runtime\Core\Misc\FGuid) NodeId )